CVE-2026-23216

Summary

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < ba684191437380a07b27666eb4e72748be1ea201affected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 8518f072fc92921418cd9ed4268dd4f3e9a8fd75affected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 275016a551ba1a068a3bd6171b18611726b67110affected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 73b487d44bf4f92942629d578381f89c326ff77faffected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 48fe983e92de2c59d143fe38362ad17ba23ec7f3affected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 3835e49e146a4e6e7787b29465f1a23379b6ec44affected
LinuxLinuxe48354ce078c079996f89d715dfa44814b4eba01 < 9411a89e9e7135cc459178fa77a3f1d6191ae903affected
LinuxLinux3.1affected
LinuxLinux0 < 3.1unaffected
LinuxLinux5.10.250 <= 5.10.*unaffected
LinuxLinux5.15.200 <= 5.15.*unaffected
LinuxLinux6.1.163 <= 6.1.*unaffected
LinuxLinux6.6.124 <= 6.6.*unaffected
LinuxLinux6.12.70 <= 6.12.*unaffected
LinuxLinux6.18.10 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References